Device for folding box blanks



9, 1949- E. LANDOLT 2,478,631

I DEVIbE FOR FOLDING BOX BLANKS I Fiied June 28, 1945 Patented Aug. 9, 1949 Ernst l andoltslt cucha ehSwit erland; I

AppIication-June ZS;1945, serial Not fiflzyMfi In--Switzerland-'Septembec20,319: :1.

i'claims wl. 93am... '3 1;. 25 collapsiblezboxes .of;...cardnboardufisuitablezifor cent flaps;; aud t iseprpvidech neendv ewea packing iruitgcakes cakes. coated yvitlrcream and so iorth Zthat is to';,s ay.,. for articles. ofswhiohgthe satisfactory appearanoe s :liable; toubeadamaged by contact. with org-by; pressureriromsunsuitable packingjarez now;.in- .commomaiseii Packingsa-fonv articles of;this character-must: .not. Joe tODnfiXDfiD-r sive meason oi. the low; costofthearticle; how.-

everntheyxmust constitute a iairlyqi-firmromrigid packingsso thatithe article zis =not. .damagedprhen being-carriedafrom the.shopttoszthezhousecen:thee

The :;main 'ObjECtdOfa-thfi inventioniconsistsisin end P e e ep csv dede th, ensions} of esco in e eseil a d i and, each t ne d v "dines h p sitionedeweak nine in...

times the-Langlebetween -lines l2.an d; I 13 in b .n is b lygl ss;t a a :an le..; between lines l2 and I4 so that, on folding t e ea e! hitfifi i trea orersifita'nciefto mending Aha-Amos i rcctcdgtheerane afi tend.to.coine...t

dome at the top of the erected box. has itsicornerszclosedand its sides made to remain substantially planar when the box is erected by means of end -pieces-hingedly secured to the endsoftthe said sides and-e ch .W ki l i1d"-.fi-: creased, on a line extending from thewcornen oft,

the central rectangular area.

According to the inventionthe newdev-ice conwhile it ;is "being filled and can-ibe easily heldcbyg i one. hand orrhzw.

In the accompanying drawings a preferred mode of construction of the new device is shown in connection with a blank of a folding box.

In the drawings:

Fig. 1 is a plan view of a blank of thin card board to be folded to form a box.

Fig. 2 is a plan view of a plate or tablet to receive and to hold the partly formed box while it is being filled.

Fig. 3 is a cross-section on the line 3-3 of Fig. 2.

Fig. 4 shows the box fully folded in a side view.

The blank to be folded by the new device consists of a sheet I of paste board, stiff paper or the like and is provided with a rectangular, for example square, central area 2. Along the sides of this area four flaps or panels 5 and 6 are formed by scoring lines 3' and 4 respectively in the sheet. Each flap 6 is provided at its free end with a tongue I and a slit 8 for latching engagement after the blank has been folded. Between adia- The-boxer:

oushgthem r ntthebhnk;

i rownt ere ni alsanea. e .s cl nva l iio .11; I a los edboxaresafllfihst substantially yertical. The

n -vs i tbrshort t an t e a s i h i ;1f h:,,b ..i the flaps ar i r lvagainst one anothenand; strengthen the-"box eon--- i ereblyc-ia fiitat i e fini -mm, =i i cS'- fconfectionery or the like the device shown inFigssv 2 and is jnsed. The-deviceconsistsof a plate '2ll "flat base 'I Shaving stifiening ribs'16and, upstanding from the contour l8 at said base, upwardly and outwardly flared side walls or edges 2 I. The edges 2| are upturned, leaving between themselves a space corresponding to the central area 2 of the blank and the scoring lines 3 and 4 thereof. The plate 20 is provided at its corners with vertical guiding lugs 22 to guide the blank I durin insertion in the plate 20, and at each corner with a tooth 23. Each tooth 23 is provided with a sharp curved edge 24 coinciding with the scored lines l2 of the blank I. By inserting the blank between the edges 2|, the flaps 5 and 6 are turned upwardly about the scored lines 3 and 4. The edge portions 9 of the blank are folded as the edge 24 of each tooth 23 meets the scored line 12. The blank assumes now the position shown in broken lines in Fig. 3. The goods to be packed may be easily inserted. To facilitate the holding of the 35 plate 20 bybut one hand together with the coni exampla perioraz. heat s. i locates sexa il i emi silcibetwe nthe:a or be l e ed bmperforat ns o 9r .n l nes. unfight".

of strong artificial resing otstifisheet, metal 0r-- the like; This*platecomprises a substantiallgr What I wish to secure by U. S. -A. Letters Patent is:

1. A device for folding a blank to erect an open box and subsequently supporting the same, comprising a substantially rectangular base. including edges, side walls forming a frame around said base, each side wall connected to an edge ofsaid' base and flaring upwardly and outwardly therefrom and adapted to fold a blank along crease lines thereof corresponding substantially to said edges, when said blank is inserted manually in said device, and a plurality of spaced teeth, each carrying an edge curved inwardly and upwardly 'with relation to said'base, said teeth disposed on said frame near intersecting lines formed by said side walls and each adapted to crease a crease line of a lug angularly disposed with relationto 4 of said base to two adjacent flaps, each end-piece having a crease line at the line of connection with each flap and having an angularly off-set crease line intermediate said two crease lines, said device comprising a base corresponding in outline to said base portion of said blank, side walls forming a frame around said base and flaring outwardly and upwardly therefrom for engaging said flaps to be erectedrelative to said base portion when'the latter is inserted into said device, and a plurality of upwardly curved edges connected with relation to said base for engaging said anggularlyv off-set-crease lines of said end-pieces for folding the same, whereby the folding of said flaps will be facilitated.

4. In a device for folding a blank along crease lines thereof to erect an open box, said blank said first mentioned rectangular crease lines, for

aiding in the folding of a box, said base having at least one slot extending from the interior'of said base through the edge and through the sidewall adjacent thereto, for facilitating manual removal of the folded box from emplacement in said device. 1

2. A device for folding a blankto ere-ct an open box and subsequently supporting the same, comprising, a substantially rectangular base including edges, side walls forming a frame around said base, each two side-walls oppositely disposed along opposite edges of said base and having convex inner surfaces facing each'other having their for facilitating manual removal of the folded box' from emplacement in said device.

3.,In a device for folding a blank along crease lines thereof to erect an open box, said blank.

having a base portion surrounded by crease lines,

flaps connected to said base portion at said crease lines foldable about said lines to form the walls of a ,box and end-pieces connected at the corners H having a base portion surrounded by crease lines,

flaps connected to said base portion at said crease lines foldable about said lines to form the walls of a-box and end-pieces connected at the corners of said base to two adjacent flaps, each end-piece having a crease line at the line of connection with each flap and having an angularly ofi-set crease line intermediate said two crease lines, said device comprising a base corresponding in outline to said base portion of said blank, side walls forming 'a frame around said base and flaring outwardly and upwardly therefrom for engaging saidflaps to be erected relative to said base portion when the latter is inserted into said device, and a plurality of upwardly curved edges connected with relation to said base for engaging said angularly off-set crease lines of said endpieces for folding the same, whereby the folding of said flaps will be facilitated, said base havi at least one slot extending from the interior of said base through the edge and through the sidewall adjacent thereto, for facilitating manual removal of the folded box from emplacement in said device.

. V ERNST LAN'DOLT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,430,232 Horton Sept. 26, 1922 I V V FOREIGN PATENTS Number Country Date 146,141 Switzerland June 16, 1931 

